There are upgrades on the Portuguese side too, but no confirmed programme to complete an HSL to Lisbon.
The main aim is a freight route to a port at Sines, south of Setubal.
I think Spanish politics forced a new line in Extremadura as part of a "levelling up" agenda.
We haven't reached the same state here where every region demands its HSL to keep up with those that already have one.
Spain has also been a big recipient of regional funds from the EU, as have places like Ireland and Poland with their new motorways.
A new HSL extension to Burgos (single track) has also opened recently.
The Basque "Y" HSL is also under construction further north.
Articles about both new lines are in Railway Gazette:
SPAIN: Passenger services began using an upgraded 193 km mixed-traffic route between Plasencia and Badajoz in Extremadura on July 19, following the inauguration of three sections of new alignment totalling 146 km by King Felipe VI the previous day.
www.railwaygazette.com
SPAIN: Passenger services on a 75 km high speed line between Burgos and a junction with the Madrid - Valladolid - León line at Venta de Baños began on July 22, the day after a formal inauguration by King Felipe VI. It is planned that this will eventually form part ...
www.railwaygazette.com
SPAIN: Passenger services began using an upgraded 193 km mixed-traffic route between Plasencia and Badajoz in Extremadura on July 19, following the inauguration of three sections of new alignment totalling 146 km by King Felipe VI the previous day.
In the longer term, the line is intended to form part of a high speed corridor linking Madrid with Extremadura and potentially Lisboa in Portugal.
SPAIN: Passenger services on a 75 km high speed line between Burgos and a junction with the Madrid – Valladolid – León line at Venta de Baños began on July 22, the day after a formal inauguration by King Felipe VI. It is planned that this will eventually form part of a high speed corridor to the French border.