That's what Adam Rubin is reporting, as well as that Chris Coste was put on waivers, so he's free to be claimed by anyone and if no one does, he will go down to AAA.
Rubin speculates that Takahashi and Nelson Figueroa will both make the team, leaving one spot for either Kiko Calero or J Mejia.
(Hat tip Metsblog)
My Take: Mets are being smart and keeping all their resources as opposed to prior years. Takahashi, Calero and Mejia all are not on the 40 man roster, but the Mets currently have 2 open slots, and if Coste is waived, then it becomes a mute point. This is definitely not what we expected when spring training opened, but that's not necessarily a bad thing either. Now send Mejia down to AA!