Linked is the AVR EB product page. This looks like the “new ATTiny” because of the 1kB to 3kB SRAM and 8kB to 32kB Flash available.
14-pin (SOIC/SSOP), 20-pin (SOIC/SSOP/VQFN), 28-pin (SSOP/VQFN/PDIP), and 32-pin (VQFN/TQFP) is similar to the AVR DA / DB / DD crew.
DA/DB/DD all have some feature that feels “extra”, while EA and EB feel more spartan.
The big point of EB is the new timers. DA/DB/DD used TimerA, TimerB, and TimerD. EA had TimerA and TimerB available.
EB has TimerB… but TimerE, and TimerF are new timers never seen before. Hopefully the documentation comes out to see what E and F can bring (or any other features EB brings to the table).