That's right. The Bluetooth SPP (Serial Port Profile) is available for all Android versions greater or equal 2.0. To use this feature, you need Run.GPS 2.3.5, which will be released today. The update is as always free.
I see that HTC Hero with Android v1.5 doesn't support Zephyr HxM,
as far as I understand this has incomplete BT stack, without required SPP ?
If I update my Hero to v2.1, HR monitoring will be available for that?