Bendis was told to write the best story he could involving Spider-Man, and was also pressured into killing him off. He resisted for a bit but came to the conclusion that writing the story was in fact, probably was going to be his best work, and it was.
Death of Spider-Man was pretty damn good, with Peter taking out five of the Sinister Six and dying with his identity revealed to the world, but secure with the knowledge that he'd saved his family. That he'd save his Aunt and friends from danger when he'd failed his Uncle. He died happy.
Then Marvel revealed that a new Spider-Man would be released right after Peter's death, and also that he would be black. In fact, the fact that the new guy would be black was almost the first bit of press they showed off along with a new costume. Fans everywhere raged hard, and people were yelling racism, affirmative action, etc...
Later, it was revealed that the new Spider-Man was also half-latino and might be gay, which stoked the flames even more. The issues are out now and people are just waiting to see what happens.
Personally, I haven't really paid attention to this but I thought this was sort of disrespectful since the new guy has no connection with Peter. Spider-Man's thing is that with Great Power comes Great Responsibility, and the failure of Peter to save a single life when he forgot that. Miles (new guy's name) so far hasn't revealed anything like that. Might have changed in the past month or so, don't know.
Anyway, Jaime Reyes, the new Blue Beetle, also had no connection to the previous one and he worked out fine so Miles might do the same. People are just going to have to see the stories.
Don't know shit about the X-Men though. Last I heard they were pretty much dissolved. Did Kitty and Bobby get them back together or something? I mean, most of them died in Ultimatum.