If you are flying an ADS-B equipped aircraft, you can easily obtain a quick and free report to validate the performance of your installation.
Using an updated online form, you can provide information about a recent flight made in the aircraft, equipage details, and your email address, and you should receive a detailed performance report within a few minutes. Further information about the process is available at:
https://adsbperformance.faa.gov/PAPRRequest.aspx

The FAA ADS-B $500 rebate program is up and running, providing qualifying ADS-B installations with a little help (admittedly, not too much help) with the financial hit. From the FAA website, details of the rebate are:
Eligible aircraft: Defined as U.S.-registered, fixed-wing, single-engine piston aircraft whose operation requires an onboard pilot,
first registered before January 1, 2016.
Eligible equipment: Avionics that are certified to FAA Technical Standard Orders and meet the program rules (software upgrades of
existing equipment are not eligible). Rebates are not available for aircraft already equipped with rule compliant ADS-B or for aircraft the
FAA has previously paid or committed to pay for upgrade(s) to meet the ADS-B mandate.

From an AOPA release (see the entire documenthere), AOPA is working with the FAA to make pilots aware of new weather products that will become available on the Flight Information Service-Broadcast (FIS-B) beginning next year. Pilots also should note new limitations in the delivery of notices to airmen that will take effect in September.
The new weather products to become available via FIS-B in 2017 include information on lightning strikes, cloud tops, icing (current and forecast), and turbulence. The FAA is also studying uplinking one-minute automated weather observation station (AWOS) observations
or center weather advisory (CWA) and graphical airmet (G-Airmet) products.
Starting this September, the FAA will limit notams uplinked by FIS-B to notam-D and notam-FDC products that generally have an effective or issuance date less than 30 days in the past. However notams advising of temporary flight restrictions (TFRs) will continue to be transmitted. The change is expected to reduce the number of notams transmitted to aircraft by about 20 percent.

A refresher on terms (from the AIM):
TRAFFIC INFORMATION SERVICE − BROADCAST (TIS−B) − The broadcast of ATC derived traffic information to ADS−B equipped (1090ES or UAT) aircraft. The source of this traffic information is derived from ground−based air traffic surveillance sensors, typically from radar targets. TIS−B service will be available throughout the NAS where there are both adequate surveillance coverage (radar) and adequate broadcast coverage from ADS−B ground stations. Loss of TIS−B will occur when an aircraft enters an area not covered by the GBT network. If this occurs in an area with adequate surveillance coverage (radar), nearby aircraft that remain within the adequate broadcast coverage (ADS−B) area will view the first aircraft. TIS−B may continue when an aircraft enters an area with inadequate surveillance coverage (radar); nearby aircraft that remain within the adequate broadcast coverage (ADS−B) area will not view the first aircraft.

FLIGHT INFORMATION SERVICE − BROADCAST (FIS−B) − A ground broadcast service provided through the ADS−B Broadcast Services network over the UAT data link that operates on 978 MHz. The FIS−B system provides pilots and flight crews of properly equipped aircraft with a cockpit display of certain aviation weather and aeronautical information.