If you think that Sabbath worship will continue in heaven, you are probably mistaken. There will be no night in heaven (Rev 22?) and hence no seven-day sequence. It will be a perpetual day, which brings up a good point - I'll get to it in a moment.
Sabbatarianism depends on a seven-day paradigm, obviously, and they also say it is based on God's example at creation, we are to follow His example. He worked six days and rested on - Saturday? Buzz! Wrong Answer! I will soon argue that God did NOT rest on Saturday. Why is this important? Although I agree that God wants us to folow His example(s) in many areas of life, always there are two ways to follow someone's example, either verbatim or analogically. For instance, we should follow Christ's example of self-sacrifice - verbatim? Must we be crucified? No, we follow His example analogically, we sacrifice our time, money, and labor. And each individual does it in a differnt way, as the Spirit leads. This stands in manifest contradiction to the assumption that we MUST follow God's example (work six days and rest on Saturday) verbatim. (I do not deny that He told Israel something to that effect, what I deny is the assumption that this applies to every individual).
But the admonition to following God's example (work six days, rest on Saturday) breaks down even more once we realize that God did NOT rest on Saturday. And why do I say that? For two reasons. First, according to Hebrews God rested from the act of creating. He is still resting from that act. If the seven-day week of Genesis was 7 24-hour periods ending in Saturday, this means that God is NOW resting seven days a week (resting from the act of creating, at least). And, therefore, if we are to follow God's example VERBATIM (as sabbatarian's insist), we should now be resting seven days a week, as He does.
Moses did tell Israel to follow God's example, which makes sense only if God does NOT entail His resting seven days a week. How do we resolve this? Does He, in the example He sets for us, rest seven days, or not? NOT. The scientific evidence is pretty overwhelmingly indicates that the earth is 4 billion years old, and that the events of Genesis could NOT have taken place in 7 24-hour periods. Moses did not say it was 24-hour periods. He said it was seven days. A day he defines as a period of light followed by a period of darkness. He doesn't specify how long that he is. Problem is, there was no sun at that time, so he couldn't have been talking about 24 hour days. Paul tells in 2Cor 4, that it was the Light of Christ's face (providing photosynthesis to the plants, for example) that shined (for millions of years) until the sun was put into place. In my view, he shined into all the Galaxy (I call it the Seven Galactic DAys) interspersed with Seven Galactic Nights, and even during the Nights, He secretly provided a bit of light to the earth to take care of the plants. We are still in God's seventh (Galactic) day of rest, Hebrews says we enter into God's rest. God does not rest seven days a week. On HIS calendar, He is only resting on the seventh day, which is an eternal day, it has NOTHING to do with Saturday. Since God did not rest on Saturday, we can never follow His example verbatim, we can only follow it analogically, that is, in a variety of non-literal ways. For example, if I rest on Wedenesday, I have rested one day of the week, as He did, I have followed His example analogically.
As a matter of fact, the language of the Decalogue is more flexible than sabbatarians care to admit. Suppose I said to you, as my employee, "Two days this week I want you to stock shelves, and the third day I want you to cashier." Your first question would be, "WHICH two days did you have in mind?" You see, that kind of language isn't day-specific. The Decalogue did the same thing, "Six days this week you shall work, and the seventh you shall rest." It doesn't tell us which day is in view, precisely because God intended to be flexible, contrary to the Saturday-legalism of sabbatarians.