The cartoon may have ended, but that doesn't mean Hasbro won't still be pimping out the toys and characters for years to come.
Each year the packaging for Rescue Bots changes, and this year the packaging has the sub-logo of "Classic Heroes Team" ... which Entertainment Earth is calling "All-Stars", so it could all just be existing characters.

The first wave of Rescan bots for 2021 has the Bumblebee car and Optimus (trailer version) Truck, that are both minor redecos of previously released toys in the Rescan size class (according to my records, this 1st wave of CHT is wave 33 since that size class began, waaaay back in 2014).

Entertainment Earth has their release date being February, but they were both in-stock on Amazon early last month, so could be out in stores by now as well.

Hopefully they are releasing other toys this year under this new banner, and maybe some new moulds. The longer this line lasts, the more fans will hound Hasbro to give us some GEN toys of Rescue Bots characters.