I believe that this is not true. As I remember, the infinities use a unique board that is based on the Pulse X(fi) board but is modified to suit the unique /n/t components. The evidence is on the label towards the upper left corner of the board in the picture. If you look closely at the bottom left area of the label, the board ID is PC-GPX-008 and just below that is the legend "[ ] X-INF [ ] S-INF", no doubt meant to be marked within the brackets to verify the build as an X or S version.
Now, since this board is also the first of the Pulse series to use the AQ2M DAC chip, it may well be the predecessor for the upcoming (we KNOW that they are coming even if they have not been announced or even mentioned) Pulse 2 or whatever they will be called, based on the new DAC chip. Probably not the exact same board as I speculate that they may add muting relays as they have already done with the Soul/Vi DAC.
More fun in LH Land... How long will this field beta batch run before full production and shipping begins?
Now the wait for the new chassis.
J.P.