Most certainly, yes. Though it might not be immediately after the reveal...
Following the weekly updates in waiting for Reach was great, some of them would be pretty routine, but every so often, you'd be bombarded with info.
Some of my highlights from that time are the reveal of firefight (and all the custom options for firefight), A sneak peak at the armoury and the reveal of holograms.
English
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The reveal of Firefight for ODST was awesome. Also, the gameplay/story trailer for Reach was another highlight for me
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I meant the reveal that firefight was gonna' be in Reach, I wasn't paying attention to the updates when ODST was being developed.