I just noticed an image and solicitation for Wolverine #900 coming out on May 5, 2010.
 
I'm pretty sure the Wolverine series hasn't hit #900 yet and, while I understand why Deadpool would get a #900 before he actual reaches it (to make fun of the other big number comics and to get there first), I don't see why Wolverine would follow Deadpool's lead and jump to #900 for a single issue.
 
References:
Marvel Wallpaper for Wolverine #900
 http://marvel.com/wallpaper/
 
Solicitation
 http://www.comixology.com/sku/MAR100603/Wolverine-900

well lets put it this way: most landmark comics do not actually count just the title series and lets count 190 for regular tittle appearances of 1988, then theres 74 issues of regular title in 2003, 46 wolverine origins, 12 Wolverine: Weapon X; which so far is a total of 322. then theres the unconvential titles the spotlight him: 128 of Marvel Comic Presents, 241 comics of Uncanny X-men, 38 New Avengers, 35 New X-men, 33 Astonishing x-men; brings the total to 797. next you need to look at all of his mini series. 6 issues each for: Kitty pryde and Wolverine,  Origin, Wolverine the end; 5 issues each for: Wolverine: xisle, Wolverine: soultaker; 4 issues each for: Wolverine netsuke, Wolverine manifest destiny; which makes the total 827. and then the titles of alternate U's such as: 83 ultimate x-men and just with that you get 910 which is 10 issues ahead of the 900 mark.

WOLVERINE #900
Written by DAVID FINCH, C.B. CEBULSKI, DEAN MOTTER, MARC BERNARDIN, TODD DEZAGO & MATT YOCUM
Penciled by DAVID FINCH, GREG SCOTT, POW RODRIX, JASON CRAIG & JAKE BILBAO

Cover by DAVID FINCH
X-Man. Avenger. Soldier. And that's just the HALF of it. In this atomic-sized special, superstar David Finch leads a platoon of comic's most talented creators in giving the Canadian killer a 21-gun salute. Ninjas, bar-room brawls, Morlocks and pirates (yes, PIRATES!): this issue sees the most marvelous mutant of all put through the paces. And if five-all new tales of Snikt-tastic action wasn't enough, there's classic reprints featuring some of Logan's greatest hits!
104 PGS./New & Reprint/Parental Advisory …$4.99

I don't get it.  Just call it what it is, not fake number it.
 
I hate how Marvel broke their numbering and then restarted at 600 for a bunch of characters who you can't find 600 comics for.  I want it to be exact when the numbering is hooked back in (a la Spidey).

I think the idea was that because Wolverine will be starting at #1 pretty soon, this is like a farwell landmark thing? It's like super-sized as well. I might be wrong, but that's about the only semi-logical reasoning I can think of.

I don't think this comic was worthy of the #900 - or $4.99 for that matter.  When am I ever going to learn?

" I don't think this comic was worthy of the #900 - or $4.99 for that matter.  When am I ever going to learn? "

f%$# a 900!
 
they should keep the numbers tight.. and try writing some decent stories for this character, too.