I'm sure there will be slipcovers with each release, but on most releases the slipcovers (if included) or any other special extras, are discontinued after the initial release. I guess we'll know for certain if people start getting the first set without a slipcover.
Edit: For Canadian buyers, the Tamers set has been added to Amazon.ca with a pre-order price of $69.99. With free shipping, it comes to nearly $20 less than importing from Amazon.com.
so wait, i'm confused. will there be no slip cover for the Tamers complete set? i just got my Adventure set today from Best Buy that had one and the Zero Two sets there also have the covers. is this a Tamers only thing or are you talking about later versions of Adventure and Zero Two not having them?
I'm not saying any of the sets WON'T have slipcovers, all I said was the standard practice with DVD releases which include special items, slipcovers or the lenticular card from the 20th Anniversary release of Transformers: The Movie, tend not to be included in future production runs. So, yes, the second set has a slipcover and I have no doubt that Tamers will have a slipcover and Frontier, when it is released, will have a slipcover.
What I am talking about is if you go into the DVD/Blu-ray section of a store, you will see many titles which don't have a slipcover and many (most, if not all of them) originally came with a slipcover wen they were released. The Blu-ray season sets for the original Star Trek were originally released with slipcovers but now, several years after the fact, they no longer come with slipcovers. The content is exactly the same, they just don't have that extra piece of cardboard. So I have no doubt that subsequent Digimon sets will include a slipcover but I wouldn't count on future production runs of the existing sets having them.