It's May Day! 
and here's what's coming out in the next couple of months:
May 2008
------------
Star Trek
June 2008
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Star Trek: Deep Space Nine
Star Trek
Note: This list is subject to change.
Note2: For February-April publications, see "prev month publication" thread

and here's what's coming out in the next couple of months:
May 2008
------------
Star Trek
- Terok Nor: Night of the Wolves
(Mass paperback) by S.D. Perry and Britta Dennison
ISBN-10: 0743482514
June 2008
------------
Star Trek: Deep Space Nine
- These haunted Seas
(Trade paperback) by David R. George III, Heather Jarman
(nb. reprinting Mission Gamma, Book One and Two)
ISBN-10: 1416556397
Star Trek
- Terok Nor: Dawn of the Eagles
(Mass paperback) by S.D. Perry and Britta Dennison
ISBN-10: 0743482522
Note: This list is subject to change.
Note2: For February-April publications, see "prev month publication" thread