I have just recently heard this rumor:
The current FIRST field is at the end of it's life. FIRST wants fields to last 5 years and this would be the 6th year for this field.
Pure speculation:
Dave Lavery said to look at John Neun's picture, that picture shows a robot playing the 1998 game Ladder Logic. The last time the field was significantly changed
Could we see a major field change this year?!