Dear MCR,
indeed there has not been a lot of news about AS-i Power 24V. The main reason for this is that this technology is focused on a very particular kind of application, namely small applications. By using this technology you have some limitation in comparison the the standard AS-i power supply, for example you can only reach 50m maximum cable length.
If your application is suitable for this technology then you might be able to use it. If not you can keep on using the AS-i power supply without any disadvantage. The AS-i power supplies will still be available, since most of the application go over the 50m line length.
You can read more information about AS-i Power 24V under this link:
http://www.bihl-wiedemann.de/englisch/press/articles/wurf_e.pdf
If you have any further questions do not hesitate in asking.
Kind Regards,
Fabricio Granados