For Volume 2, my guess is that Sony will include years 1937-1938:
1. Grips, Grunts And Groans (1937)
2. Dizzy Doctors (1937)
3. 3 Dumb Clucks (1937)
4. Back To The Woods (1937)
5. Goofs And Saddles (1937)
6. Cash And Carry (1937) (never released on DVD)
7. Playing The Ponies (1937)
8. The Sitter Downers (1937)
9. Termites Of 1938 (1938)
10. Wee Wee Monsieur (1938)
11. Tassels In The Air (1938) (never released on DVD)
12. Flat Foot Stooges (1938)
13. Healthy, Wealthy And Dumb (1938)
14. Violent Is The Word For Curly (1938)
15. Three Missing Links (1938)
16. Mutts To You (1938) (never released on DVD)
Now, the thing with volume 2 is that 13 out of the 16 shorts were already released on DVD before. However, some of them need to be released in better quality such as Grips, Grunts and Groans, Back To The Woods, and Wee Wee Monsieur (which was too dark on the previous DVD).
However, maybe S&C can give a message to Sony about recycling certain shorts on Volume 2, such as Dizzy Doctors, Playing The Ponies, The Sitter Downers, and Violent Is The Word For Curly because those already look great on the chromachoice DVDs. So, there's nothing further that Sony needs to do with those shorts. Hopefully, that would help cut down on their workload.