This time about 2 weeks ago, there was about 30 updates at 1 time on the FGW website.
Today, there are just 4. These are them:

15:05 London Paddington to Penzance due 20:35
This train has been revised. It will no longer call at: Newton Abbot, Totnes, Plymouth, Liskeard, Bodmin Parkway, Par, St Austell, Truro, Redruth, Camborne, St Erth and Penzance. No further information is available at this time.
21:28 Worcester Foregate Street to Swindon due 22:59
This train will be started from Gloucester. It will no longer call at: Worcester Foregate Street, Worcester Shrub Hill, Ashchurch For Tewkesbury and Cheltenham Spa. No further information is available at this time.
18:38 Taunton to Worcester Foregate Street due 21:17
This train will be terminated at Gloucester. It will no longer call at: Cheltenham Spa, Ashchurch For Tewkesbury, Worcester Shrub Hill and Worcester Foregate Street. No further information is available at this time.
17:33 London Paddington to Paignton due 21:17
This train has been revised. It will no longer call at: Exeter St Thomas, Starcross and Torre. No further information is available at this time.

Since the Kemble Landslip incident, all the live updates have been displayed as "No further information is available at this time." I wonder if this is an error on the FGW site or they have forgot to enable links on the updates.
I note the last FGW southbound train serving Worcester & Ashchurch has gone.