Vezér 1.6 added support for sending 16bit Art-Net values by merging two consecutive DMX channels. This option is available for both Art-Net Color and Value Tracks.
Recording of incoming 16bit DMX data is also possible. However its impossible the detect if a DMX channel value is 16 bit - since a 16bit DMX no more than 2 normal channel values merged together - so you need to mark the starting channel (the MSB) to excepted as a 16 bit value in Vezér's Art-Net Record Filtering Preferences.
Exporting to XML
Art-Net Tracks rendered to XML now contains a "resolution" key with the value "8bit"/"16bit".