Note that PDS is not QuickBasic. It is not the same product line. The last version of QB is 4.5.
PDS 7.10 contains the MS Basic compiler 7, called BC7.
Microsoft began the compiler line in the early 80s with MS BASCOM (MS Basic Compiler). It grew up to v. 5 before QuickBasic showed. QuickBasic was basicly a MS Basic Compiler and an IDE. The "Quick" in the name is there 'cause it was "quick" to develop in BASIC being able to compile from within the IDE. While the QuickBasic product line was out, the MS BASCOM product line got discontinued.
The QuickBasic product line got to v.4.5 in 1988. This is the last QB version.
Then MS took the BASCOM product line where they had left it several years ago, developing MS Basic Compiler 6.0 which was shipped as the main part of MS PDS 6.0 .PDS (Professional Developing System) contains more than just a compiler+Ide, it brings professional profiling and debugging utilities.
After PDS 6, PDS 7 and PDS 7.1 were released in 1990 containing MS Basic Compiler 7.0.
Later, VBDOS was released. Some people claim that it is, in fact, the MS Basic Compiler 8.0. The Pro version had all the goodies that PDS had, so many people consider VBDOS Pro to be PDS 8.
I wish I had my old page up
This all was to tell you that if you want the latest version of MS Basic Compiler for MSDOS you should get VBDOS. PDS 7.1 is not the last one.