No it is what is written. 3 questions were asked in verse 3, when shall these things be in regard to the destruction of the Temple. When shall be the sign of Jesus' coming and when shall be the end of the world. What follows is an answer to all three. The audience is any and all throughout the ages until He comes in His glory. How do we know?
Because Grammatically speaking the context is continuous from verse 1 to at least 31 when it speaks of Christ coming with His angels to gather the elect at the end of this world.
How do we know? By His use of words like and, but, then, when wherefore, and so forth. These words connect what is about to be said to what is already said. And they are in the Greek also. So that means up to Christ's coming in the clouds of glory with His angels he expects His followers to still be keeping the Sabbath.
Matt 24:1 And Jesus went out, and departed from the temple: and his disciples came to [him] for to shew him the buildings of the temple.
Matt 24:2 And Jesus said unto them, See ye not all these things? verily I say unto you, There shall not be left here one stone upon another, that shall not be thrown down.
Matt 24:3 And as he sat upon the mount of Olives, the disciples came unto him privately, saying, Tell us, when shall these things be? and what [shall be] the sign of thy coming, and of the end of the world?
Matt 24:4 And Jesus answered and said unto them, Take heed that no man deceive you.
Matt 24:5 For many shall come in my name, saying, I am Christ; and shall deceive many.
Matt 24:6 And ye shall hear of wars and rumours of wars: see that ye be not troubled: for all [these things] must come to pass, but the end is not yet.
Matt 24:7 For nation shall rise against nation, and kingdom against kingdom: and there shall be famines, and pestilences, and earthquakes, in divers places.
Matt 24:8 All these [are] the beginning of sorrows.
Matt 24:9 Then shall they deliver you up to be afflicted, and shall kill you: and ye shall be hated of all nations for my name's sake.
Matt 24:10 And then shall many be offended, and shall betray one another, and shall hate one another.
Matt 24:11 And many false prophets shall rise, and shall deceive many.
Matt 24:12 And because iniquity shall abound, the love of many shall wax cold.
Matt 24:13 But he that shall endure unto the end, the same shall be saved.
Matt 24:14 And this gospel of the kingdom shall be preached in all the world for a witness unto all nations; and then shall the end come.
Matt 24:15 When ye therefore shall see the abomination of desolation, spoken of by Daniel the prophet, stand in the holy place, (whoso readeth, let him understand)
Matt 24:16 Then let them which be in Judaea flee into the mountains:
Matt 24:17 Let him which is on the housetop not come down to take any thing out of his house:
Matt 24:18 Neither let him which is in the field return back to take his clothes.
Matt 24:19 And woe unto them that are with child, and to them that give suck in those days!
Matt 24:20 But pray ye that your flight be not in the winter, neither on the sabbath day:
Matt 24:21 For then shall be great tribulation, such as was not since the beginning of the world to this time, no, nor ever shall be.
Matt 24:22 And except those days should be shortened, there should no flesh be saved: but for the elect's sake those days shall be shortened.
Matt 24:23 Then if any man shall say unto you, Lo, here [is] Christ, or there; believe [it] not.
Matt 24:24 For there shall arise false Christs, and false prophets, and shall shew great signs and wonders; insomuch that, if [it were] possible, they shall deceive the very elect.
Matt 24:25 Behold, I have told you before.
Matt 24:26 Wherefore if they shall say unto you, Behold, he is in the desert; go not forth: behold, [he is] in the secret chambers; believe [it] not.
Matt 24:27 For as the lightning cometh out of the east, and shineth even unto the west; so shall also the coming of the Son of man be.
Matt 24:28 For wheresoever the carcase is, there will the eagles be gathered together.
Matt 24:29 Immediately after the tribulation of those days shall the sun be darkened, and the moon shall not give her light, and the stars shall fall from heaven, and the powers of the heavens shall be shaken:
Matt 24:30 And then shall appear the sign of the Son of man in heaven: and then shall all the tribes of the earth mourn, and they shall see the Son of man coming in the clouds of heaven with power and great glory.
Matt 24:31 And he shall send his angels with a great sound of a trumpet, and they shall gather together his elect from the four winds, from one end of heaven to the other.