The said relays are in production and available e.g. from Farnell. They also have a industry standard pin layout, so
replacement types are available from many manufacturers, e.g. Tyco RT114 series.
As a somewhat confusing point, slightly different pinouts for SPDT relays with a grid of 3.2 respectively 3.5 mm
exists, that can be easily mixed up. G2RL-1-xx uses a 3.5 mm grid.