Murakawa Daisuke 7p beats Iyama Yuta 9p 3-2 in the Oza tournament, making a big dent in Iyama's ambition to hold all seven major titles.

Does anyone know if the rule still stands that Murakawa now receives promotion to 8p for winning the Oza, one of the minor of the big 7 titles?

A very good question. I want to know the answer too. Murakawa Daisuke belongs to Kansai Kiin, not sure if the same promition rules apply. Last time a Kansai player won the Oza was 33 years ago by Hashimoto Shoji.

From the GoGoD Archives:

In January 2005 the Kansai Ki-in announced that it was introducing a new system of promotions effective from that date. It was virtually the same as the Nihon Ki-in system but with the following differences:
•Promotion to 7-dan is also possible by winning the NHK Cup, JAL Supergo, Shinjin-O, or Kansai Ki-in First Place Championship, or by reaching the last four of a world championship.
•In the number-of-career-wins category, the Kansai Ki-in First Place Championship and Samsung Cup are included as official events in place of the Ryusei and Agon-Kiriyama Cup.
•Promotions under the prize-money system are limited to 4-dan to 5-dan and below, and to just one player in each category.
•Promotions take effect on 1 April the following year for the career-wins and prize-money categories.

(For the Nihon Ki-in the titles which will earn automatic promotions are:
•To 9-dan: ◾Winning once: Kisei, Meijin, Honinbo, a world championship
◾Winning twice: Judan, Tengen, Oza, Gosei

•To 8-dan: ◾Challenging or being runner-up: Kisei, Meijin, Honinbo, a world championship
◾Winning once: Judan, Tengen, Oza, Gosei

•To 7-dan: ◾Challenging: Judan, Tengen, Oza, Gosei
◾Entering league: Kisei, Meijin, Honinbo
◾Winning once: Agon-Kiriyama Cup, Ryusei)

The last Kansai player to win the Oza was Yamada Kimio - it just that he wasn't a member of the Kansai Ki-in. Kansai fans are lucky - they have two outfits they can support.

Murakawa Daisuke is confirmed to be 8-dan (source: Kansai Kiin website)

Congrats to Mr. Murakawa.
He was nice in the NHK documentary on Fujisawa sensei.