Here is the decoder ring:
"Impatient" = for programmers familiar with another programming language
"Really Impatient" = for programmers familiar with the prior version of the same programming language
The "Java 8 for the Really Impatient" was a one-off for
Java 8, which had so many changes that I put together a book with just the changes, for readers that are familiar with Java 7.
There won't be a "Java 9 for the Really Impatient" because it would only be 30 pages thick :-)
And I don't think there will be a "Scala 3 for the Really Impatient" either, but who knows...we'll have to see what Scala 3 will be like.
Cheers,
Cay