If you belong to the fairly niche group that loves both superheroes and ARPGs/Diablo clones, you might want to check out Marvel Heroes. According to the developers it has just recently received its "biggest update ever", and judging purely by the gigantic size of the patch notes I have very little reason to doubt their claims.
Every single hero has received numerous balance changes, the old way of leveling has been replaced with a new and more streamlined version, and the end-game progression system has been reworked in order to ensure that "the themes are stronger, the benefits are better." All of this is just the tip of the iceberg, however, so if you have a couple of hours to spare you will find the official patch notes by heading over here.
As for whether the patch is any good or not, that is a tricky question to answer. According to the most recent Steam reviews it is the worst thing in existence, with the most common complaint being the removal of 'teleport all over the place' mechanics, but whether these complaints are valid or just people hating changes - that I do not know. So if you have a bit of free time and an interest in ARPGs, you can try and find out for yourself by heading to the official website.