Here's what you can look forward to:
16 more pages:
Two pages added to the 4005 chapter
Two pages added to the 4003 chapter
Two pages added to the 4003S chapter
New four-page chapter on Special Order Rick basses (for dealer/distributors)
Six pages added to Customs, mods, and one-offs chapter
At least 34 new photos (but two or three old ones replaced)
Updated information on the W and SW basses, and more
Revamped cover
Some pages redesigned and repositioned
Not to mention corrections of minor fudgeups in the 1st Edition
Other highlights: Photos of Geddy Lee with Ricks (which, sadly, I was not able to obtain for the first edition)

Recent photo of the James Kirkland "Blue Boy" bass

Photo of the lefty Tuxedo

Photo of one (or two) fretless 4003S/5

Don't know at this point of the price, but suspect it will be higher. It's not up to me; the publisher figures all of that out. I suspect they'll shoot for a June release as that was when the first edition was released (2013 - four years ago!

Here we go!