The phrase "augmented since" is correct and usable in written English.
It can be used to indicate that something has been increased or enhanced from a specific point in time.
Example: "The capabilities of the software have been augmented since its last major update."
Alternatives: "enhanced since" or "improved since".
His vision of what theatre should be is outlined in Arguments for a Theatre, first published in 1989 and augmented ever since, as he developed his belief in tragedy as the greatest form of theatre.
In the no-man's land between them and the protesters' barricades the Army is deployed, augmented since yesterday — I watched one new platoon jogging into position.
[Updates: This story originally published about Facebook launching a modified version of Android that creates a Facebook content-heavy home screen experience that will debut on an HTC handset, but has since been augmented with references to other sites who later reported their sources had heard similar details about the event.
She has since augmented that with talk of old family photographs and high cheekbones.
This diagnosis, based on the characters of one premolar and four molar teeth since augmented by a few complete jaws, is not by any means universally accepted.
Dr. Lippman has since augmented his career through pointed and specialized media partnerships.
Leading the augmented reality category since 1999, the company maintains a presence in Europe and the U.S., and supports a network of partners worldwide.
This is an obvious response to what has been Jack in the Box's most successful new menu product in years: the Buttery Jack burgers introduced a year ago and since augmented with flanker additions like the recent Cheddar Onion Buttery Jack.
This was combined with applying the gel repeatedly, an administration regimen aimed not only at evaluating protection, but also at identifying any adverse reactions that might augment transmission (since our inoculum was intended not to infect 100% of the control animals).
