As you can see and the release announcement, not all features are available in these new packages, primarily because of several bugs in 4.4 GCC GNAT compiler.
What can Simple Components do for you?
The current version provides implementations of smart pointers, directed graphs, sets, maps, stacks, tables, string editing, unbounded arrays, expression analyzers, lock-free data structures, synchronization primitives (events, race condition free pulse events, arrays of events, reentrant mutexes, deadlock-free arrays of mutexes), pseudo-random non-repeating numbers, symmetric encoding and decoding, IEEE 754 representations support. It grew out of needs and does not pretend to be universal. Tables management and strings editing are described in separate documents see Tables and Strings edit. The library is kept conform to both Ada 95 and Ada 2005 language standards.
You can the package here.