The current products are listed here:
http://rfspace.com/RFSPACE/Antennas.html
Their tweet brought these to my attention, but was actuall for a new
version of their PCB antenna,
the TSA 900, which has VSWR<2.35 from 900 MHz to 13 GHz:
https://twitter.com/rfspace/status/794708128264835073
A graph from an Agilent VNA is attached to tweet.