I must have a ton of time on my hands (lol) but I was curious and decided to break it all down. To others that are interested here is what I found.
These are the 20 planets common to both games, the XBOX Meteos Wars and the DS Meteos game:
01 Anasaze
02 Bavoom
03 Boggob
04 Cavious
05 Dawndus
06 Firim
07 Forte
08 Freaze
09 Geolyte
10 Globin
11 Grannest
12 Gravitas
13 Hevendor
14 Jeljel
15 Lastar
16 Layazero
17 Luna-Luna
18 Mekks
19 Meteo
20 Oleana
These are the two planets unique to the XBOX Meteos Wars:
21 Limotube
22 Lumious
And these are the ones unique to the DS Meteos game:
21 Brabbit
22 Florias
23 Gigagush
24 Hotted
25 Megadom
26 Starrii
27 Suburbion
28 Thirnova
29 Vubble
30 Wiral
31 Wuud
32 Yooj
Now then, if you happen to look here at this wallpaper from the Meteos Wars site:
http://www.meteoswars.com/wallpaper/wp05_1600_1200.jpgYou will see there are a total of 37 planets on there, including the unknown ? planet that really isn't anything at all. The two new unaccounted for Meteos are the ones directly to the left of Meteo itself, and the other is between Geolyte and Hotted (or directly to the right of Geolyte if you are unfamiliar with the DS Meteos game). That's 14 potential planets in DLC. I liked Florias' ditty from the DS and was disappointed it was not here on the XBOX. Hopefully they will not be long in coming to DLC.
Thanks for reading!
edit for minor spelling oopsie.