X-Men titles currently being published include:
- Astonishing X-Men
- New Mutants
- Uncanny X-Force
- Uncanny X-Men
- Wolverine and the X-Men
- X-Men: Legacy
, Wolverine and the X-Men
, and X-Men: Legacy
have all tied into the currently-ongoing crossover miniseries Avengers vs. X-Men
. AVX deals with the arrival of the Phoenix Force at Earth. While the Avengers attempt to contain Hope Summers and find a way to defeat the Phoenix, most of the X-Men rally around Cyclops, who believes Hope and the Phoenix represent a future for mutantkind.
A full list of titles involved in AVX can be seen here
(but certainly be careful to avoid the Plot section of that Wiki entry!).
Someone else will likely be able to fill you in on the storylines that you missed between where you stopped and now.