Wandering not Lost
so is this link rumored or is it real?
If you race for Team Garmin Chipotle, it's real today. For everyone else, later this year.
Current wireless PT hubs will be field upgradable to ANT+ to make them work with the 705. If it goes like the SRM integration, there may be firmware upgrades needed for the 705, which Garmin publish via web (also an easy DIY). So either investment today is protected.