It looks like Lexus is working on an electric three row SUV, thanks to recent trademark applications in Europe.

The trademarks for TZ450e and TZ550e were discovered by a member of the Lexus RX Owners forum. The name also aligns pretty closely with the 2024 TX SUV that Lexus recently unveiled, which means that it might be a fully electric version of the SUV.
Lexus has not made any announcements about a TZ branded model, so stay tuned.