Welcome back!
Interest and activity seem to be ramping up across the whole range of what we call "Amiga" - now is an excellent time to jump in.
These are just a few examples, some have been in the making for many more than 4 years and I'm only scratching the surface.
1) Release of new english print magazine "Amiga Addict"
2) Release and maturation of the Vampire V2 FPGA accelerators for 68000 Amigas, a V2 card for A1200, the V4 Standalone Vampire and up-and-coming new V4 accelerators for the above (and possibly for the A4000)
3) Increasing in the range of Terrible Fire accelerators - add-on accelerator cards for Amigas ranging up to 68060
4) Pi Storm - a project to drop-in a Raspberry Pi into a 68000 socket where the Pi emulates the CPU (at high speed), also providing RTG, HDMI out, RAM and hard disk for the Amiga for very little cost.
5) RGB to HDMI - a cheap solution to get clean RGB signals out to HDMI using Raspberry Pi Pico (older Denise chips only)
6) Excellent additions and progress in Amiga emulator solutions - WinUAE, Amiberry, FS-UAE to mention but a few
7) AmiKit, Aros-One, Icaros, Apollo OS, PiMiga - pre-configured Amiga environments for real Amigas / x86 hardware / Raspberry Pi.
Not to mention dozens of hardware solutions, new cases (Checkmate A1500 and A1200.net), keyboards (both replacements and alternatives to "real" Amiga keyboards), the MISTer project is a giant topic in itself covering way more than just Amiga, UnAmiga FPGA from EduArana... and many more.