Here's what's new in last week's Surface Pro 4 firmware updates

On Friday, Microsoft released a bunch of firmware updates for the Surface Pro 4, but unfortunately, we weren't able to tell what exactly got fixed, since the company didn't publish a changelog. All we were left with was a list of what got updated, but no indication of what those updates do.

And being that it was a Friday, that meant that it would be a few days before we ever found out. Today, though, the firm finally published a changelog. Here's what's new:

Windows Update History Name	Windows Update History Name
Marvell Semiconductor, Inc. driver update for Marvell ACASTAR Bluetooth Radio Adapter	Marvell AVASTAR Bluetooth Radio Adapter - Bluetooth 15.68.9114.29 implements changes to meet EU regulatory requirements.
Intel Corporation driver update for Intel(R) Iris(TM) Graphics 540	Intel(R) Iris(TM) Graphics 540 – Display adapters 21.20.16.4627 improves DX12 and power performance.
Microsoft driver update for Surface Embedded Controller Firmware	Surface Embedded Controller Firmware - Firmware 103.1744.256.0 improves system stability.
Surface driver update for Surface Management Engine	Surface Management Engine - Firmware 11.6.25.1229 improves system stability.
Surface driver update for Surface UEFI	Surface UEFI - Firmware 107.1741.768.0 improves Wi-Fi performance when waking from sleep.
Marvell Semiconductor, Inc. driver update for Marvell ACASTAR Wireless-AC Network Controller	Marvell AVASTAR Wireless-AC Network Controller – Network adapters 15.68.9114.29 implements changes to meet EU regulatory requirements.
Intel Corporation driver update for Intel(R) Smart Sound Technology (Intel(R) SST) Audio Controller	Intel(R) Smart Sound Technology (Intel(R) SST) Audio Controller – System devices 9.21.0.2102 improves video performance in some applications.
Intel Corporation driver update for Intel(R) Smart Sound Technology (Intel(R) SST) OED	Intel(R) Smart Sound Technology (Intel(R) SST) OED – System devices 9.21.0.2102 improves video performance in some applications.
Microsoft driver update for Surface Accessory Device	Surface Accessory Device – System devices 1.1.507.0 improves system stability.
Microsoft driver update for Surface Pen Pairing	Surface Pen Pairing – System devices 3.0.0.1 enable Surface Pen simple pairing and features.
Microsoft driver update for Surface Integration	Surface Integration – System devices 1.0.153.0 enables Power Slider feature improving battery life, and improving adaptive brightness feature.

The suite of updates checks off every box in the 'Value Indicator' table, including security, reliability, connectivity, compatibility, performance, and battery life. It's quite a large series of updates for the aging device, which seems even more odd given that it had already received new firmware for the new Type Covers just nine days before.