No specific info about version 2.2. Please visit the main page of MergePDF on Mac Informer.
Merge, split, watermark and crop PDF documents with PDF Plus.
This program helps you split, merge, and compress PDFs.
Extract given page ranges as well as merge various PDF documents.
Merges several PDF documents into one single PDF file.
PDF Split & Merge is a free open source tool to split and merge pdf documents.