I haven't played this since 1.0, due to my computer no longer having an audio output, but I have been checking out the Steam forum and seen what people have talked about.
Seems the game still has the atrocious terrain pop-in (both of the purely graphical variety, and also of the impaling-your-Seamoth-on-a-wreck-that-wasn't-there-a-second-ago variety), reapers still occasionally venture into the safe shallows, and the Cyclops even has a new bug that drains its battery to 0% when left alone with the lights and engine turned off.
Torpedoes are still a complete waste of resources (although slightly fewer resources now that the recipe has been changed), the stasis rifle and knife can still kill everything in the game without resistance except for warpers, who are still by far the deadliest and most irritating creatures to inhabit planet 4546B. Reefbacks are still completely blind and will crash into base structures if you build them in the wrong place.
Sea Treaders have been tweaked a bit, so the rocks they uncover now drop gold, lithium and diamonds. Treaders used to be an infinite source of copper, but that's no longer the case. Jury is still out on whether or not reefback barnacles respawn, but it at least looks somewhat promising. Other resources are still not intended to respawn, and it's still a bug that they sometimes do.
There's still no reason to plant anything other than marblemelons, especially now that bulbo samples had their water content nerfed to hell and back. Blood oil and benzene both still have no value in the bioreactor, and you'll pretty much never need more than 9 blood oil samples. 12 if you want two grapple arms instead of just the one. Mesmer eggs have been officially implemented! Reefback eggs have not.
Predators are still just as wacky as they've always been, you still occasionally fall into the nothingness beneath the world, and you can still complete the game while avoiding getting infected by the bacterium if you know what you're doing.
Game's even prettier than it used to be before, and it's still got that deliciously good environment design and ambience. Just... Don't play hardcore, don't expect realistic animal behavior from anything, and whatever you do don't mention co-op multiplayer on the forum.
EDIT: Also, fair warning, the game does not autosave at any point. Remember to manually save the game frequently.