I heard some time ago from the colleague who got an internship at Google that they have to release a new project almost every 3 months and then fight against other internal teams to do a public release. This way they — mostly interns — can justify a full-time contract. At the same time, because these projects also need a project manager, some high profile engineers help the interns in order to get bonuses and also to justify a change of responsibilities to, maybe, become full time engineering managers.
Whatever the story behind the chat re-brands is, many will agree with me that this is becoming irritating.