Wifi and HDMI = Digital Photo Screen

Hi. Was wanting a bunch of new pictures/posters for the house. Want to be able to change them. Instead of regular prints and such - and changing them manually/physically - thoughts went to the digital photo frame and remotely controlling which picture is shown

17 inch = $200 on amazon
32 inch = $600 on digitalframe0.com, $440 on bigeframe.com

but a 32 inch monitor is only $200 on amazon

I can program, do electrical control wiring and soldering, etc - most any arduino project
What is a low cost arduino processor with wifi and hdmi or vga .

Each display would have an arduino processor with a number. Would like to - transmit image from central computer - over wifi - to each processor to display. So arduinos would be listening for a broadcast with their number, download image, and then display it
Maybe a switch on arduino to set number (address) would be nice. Can't think of any digital or analog I/O. Speed is not really important

Any ideas on how to achieve this cost effectively?

Thanks!

Each display would have an arduino processor with a number.

sp. "Raspberry Pi"

Delta_G:
Step one will be to invent an Arduino capable of HDMI output.

The MKR Vidor 4000 has HDMI output, but I would still strongly recommend the Raspberry Pi.