Feb - Bard Launched with LaMDA -- Immediately replaced by Palm 2 backend within a month.
May - Launched Palm2 with 4 different sizes, 2 of which were unusable (poor Gecko) and 1 of which was unavailable (unicorn being invite-only/ask your google rep), which replaced Palm-540. Will be replaced by Gemini Ultra apparently next year as "Bard Advanced"
Launched Duet AI for both Workspace and Cloud, still compares unfavorably to GH Copilot.
SGE basically caught up to ChatGPT web search with Bing
June - Imagen released, results were ok, and immediately superseded by DallE3 within 3 months.
November - Youtube releases AI Music generation, but only as part of their Music AI Incubator.
Gemini launches with the infamous blue duck video.
Gemini Ultra will likely be gatekept just like Palm2-Unicorn despite performance only matching GPT4/Turbo (and despite delaying their official launch by a quarter).