Apparently the shift started today for some of the flights listed in the press release.
I hope it won't generate too much confusion, especially in the case of a missed connection, but non SkyTeam codeshare flights will remain at their original Terminal:
AF2288 (CDG-BUH) will leave from 2E whereas 50 min later AF2888 (CDG-BUH) will leave from 2B since it is operated by Tarom. Same with JAT Airways flights to BEG (AF1186: 2B, AF2988: 2E).