I can say it's a little improved, but still very inconsistent. I'll use today as an example. On my way to work this morning, I was playing Angry Birds Space (don't worry, not driving, I ride a train). I got a text, answered it, came back to the game right where I left off. A little later, get another text, answer it, and the game reloaded from the beginning splash screen. If I had to put a number to it, I'd say about 1/3 of the time it works. When I was running the Sense launcher, it would reload every single time. On the way home, I was watching an episode of Breaking Bad (I need to catch up before the new season begins!). It was an .avi ripped from a dvd and loaded on my sd card. I was able to pause and go to something else (email, text) and come right back every single time. Leaving web pages and coming back is a little better than games, but still not consistent. I get a reload probably about 60% of the time, but when it does it goes right to where I was. It's highly dependent on what else I've been doing, how graphic the page is, and how many tabs I have open.
Google Maps - I've noticed that when you're strictly using Maps, if you leave the map app to do something else, it turns off the GPS (there may be a setting to leave it on, I don't know), so when you come back it has to turn GPS back on and obtain a new fix. This may cause routes to re-load. If you're using the dedicated Navigation app, GPS persists and the app is put in the Notification bar. You can leave the app and come back without re-fixing or re-calculating your route. Now I haven't tested it extensively, so don't know it's limits. I know that when I'm using Endomondo (which uses GPS to track your runs and persists in the notification bar like Nav), I can do all sorts of things while it's running and it won't stop until I specifically tell it to.
The absolute biggest improvement is that my homepage and widgets practically never reload, where Sense reloaded on me at least once a day, if not more.
Bottom line is that yes, Sense is still running the show and it's aggressive minfree settings persist. It just takes a little longer to hit the threshold. See
this thread for even more discussion on more memory tweaks.