It's been a long wait, but Australian carrier Telstra has now confirmed that it will begin offering the Lumia 950 and Lumia 950 XL starting on Tuesday, March 29. From Telstra:

We're pleased to confirm that the Lumia 950 and 950XL will be available on the Telstra Mobile Network from Tuesday 29 March. It will be available on a range of Go Mobile plans and Go Business Mobile plans online and in-store. Thanks for your patience.

As far as pricing is concerned, Telstra has remained mum. However, prices should land around $10 per month for the Lumia 950 or $15 per month for the Lumia 950 XL with a $70 plan, according to @WP_DownUnder on Twitter.

Thanks for the tip, @WP_DownUnder!