For a variety of reasons we haven't played our beloved game for several weeks now, so I've yet to try out my hybrid character.
However, I did get a look at the playtest for the Monk class (thanks to Crwth, as usual). Here are my usual half-assed opinions.
First off, the Monk is now Psionic. My initial reaction to that was... well, I was disgusted. I've always hated psionics going all the way back to AD&D. No good reason for that. I think that my problem with psionics started with it not feeling "in place" with the whole swords and magic theme. Anyways, I was young and it's a bias that has irrationally stayed with me ever since.
However, I quickly reminded myself of that and of the fact that it's just a word. With that in mind I was able to get past my hang up and approached it with an open mind (as open as my mind ever gets anyways).
Then, a funny thing happened. I realized that the Psionic power source is a perfect fit for the Monk. In fact, it totally changed a class that never seemed to find the right niche.
With Psionics however, the monk is suddenly associated with it's famous mental fortitude and discipline in a concrete way. What was once just a bit of flavor for RP purposes is now a central theme of the class. It simply works.
Emboldened by that shattered paradigm I continued reading. Much like every class in 4E the monk has some interesting powers, some that are only so-so and formulaic. The new twist of a "Full Discipline" is interesting. Sorta reminiscent of the old "full round action". I like it in that it really makes it easy to visualize the fluidity of the Monk in battle.
My only real complaint is in the weapon proficiencies. I'd like to see more for the monk, just because the real world inspiration (or the one that I visualize when I think "monk") could pick up anything nearby and turn it into a weapon. While I don't think farm implements need to be listed in a PHB, I'm hopeful that the traditional kama, sai, and whatnot find their way into the game as Monk implements. Frankly I'd be surprised if they didn't but for now it is an issue.
All in all, they've done a great job with the 4E monk. Should my current character die, or choose to "retire", I'm thinking my next character will be a monk. Perhaps if the playtesting is done and the PHB3 is out, I might get to try the hybrid monk/sorcerer I've been dreaming of since FR loosened the monk multi-classing restrictions. Now that's something to look forward to.