JASON SNELL, SIX COLORS:
"Due as a part of El Capitan this fall, and available right now as a public beta is the first major update to Photos for Mac, the replacement for iPhoto and Aperture that Apple launched earlier this year.
"Here are the major additions you can expect to see in Photos when 1.1 arrives this fall (or when you install the public beta, depending on your enthusiasm)."
Read more about it, here.
Also, read my review of Jason's ebook on Photos for Mac OS X, here.