As it is not mentioned specifically on the main page, and I did not expect anyone so soon, I will say it here!
The batches of Hi-Rez PNGs, Raw files, etc will be available at the end of every month.
I'll post any sketches and finished pieces on Sundays, or as they're done, whichever times allows for. Hopefully this results in relatively frequent updates!
Thank you all for your support! ^.^