Don't forget Nvidia NEVER limits the present, only the future. The fact at hand here is that they can quite deliberately consider as "future" the next gen, and that it's therefore perpetually ping pong with nVidia on each side of the table and never missing the rebound. That's the place they carved for themselves.
So what is it? You can be sure they'll have leveled a performance increase just enough. So the 5070 will be slightly better than the 4070S *at something (take your pick: RT, AI, and/or a slight generation increase)* and replace its pricepoint (+50$) or something like that. The 4070S will see a price drop by mid 2025 to 4070 pricepoint, which will take most of 6 months before it even starts to show when you're regularly browsing prices, by which time you'll be a couple months away from the next gen. The 4070 will be evacuated OR will become the "5060Ti" as is or something along those lines depending on how nVidia needs to target a pricepoint with "old" performance. This leaves ample space to make a 5070S or a 6070, as they'll see best, with 16GB vRAM. Perhaps it will even become a ping-ping-pong just like Intel once upon a time went from tick-tock to tick-tick-tock,
By then nVidia will have calculated the market shares of each Blackwell line and will have come up, as needed, with a 5070Ti, a 5080Ti, a real 5060Ti, or will wait for the next gen to just upgrade each the 70 and 80 as a Super/Ti edition. If anything I would figure either the "Ti" editions for any card might be eventually evacuated, or that they'll launch "Ti"s a little early on a following Super gen and play with prices so that it fits the market shares with just the minimal expense (again take your pick, could be vRAM, could be frequency increase, could be better RT or AI implementation, or of course opening a specific chip in full, and/or a bit of all of these).
As of now nVidia seems to make a point of offering "about" as many lines as in the past, but we can also see how they're skipping on their "traditional" array of cards in the mid/high end so that there is less of them to compare with/upgrade to, but also that each of them is a significant step into leveling or improving market shares still. It's difficult to see an obvious trend in where they decide that a line should come up or be skipped for any gen around, but one thing for sure is that they do re-use any lines they have in waits strictly as needed instead of feeling obligated to make them all within six months of a launch. I don't believe they will strictly follow any trend neither. I mean, all they need to do now is to have a next gen offering with the slightest step-up and see how it goes until they can suck up some money with any next series or upcoming Ti as they feel is needed to fullfil their intended margins AND just not lose a single necessary step in scraping all of the available extra for a similar cost ratio.
They'll start to throw all they've got in for a couple of gens when/if AMD or Intel make any significant threathening leap. I hoped they would do it now while they can achieve and secure a definitive step-up in performance, and I guess they would have if their market share wasn't so dominating already, but as it stands they do not need to do anything much but ensure the xx90 card will reign supreme for about two years, which isn't very difficult to achieve when they have created and gained complete control over a market where any other consumer card they make is basically just skimming some performance increase, and where there is no direct competition to be had anyhow.
