diff --git a/doc/configtables/existing_capacities.csv b/doc/configtables/existing_capacities.csv
index 87519193..eacae35b 100644
--- a/doc/configtables/existing_capacities.csv
+++ b/doc/configtables/existing_capacities.csv
@@ -3,4 +3,5 @@ grouping_years_power ,--,A list of years,Intervals to group existing capacities
 grouping_years_heat ,--,A list of years below 2020,Intervals to group existing capacities for heat
 
 threshold_capacity ,MW,float,Capacities generators and links of below threshold are removed during add_existing_capacities
+default_heating_lifetime ,years,int,Default lifetime for heating technologies
 conventional_carriers ,--,"Any subset of {uranium, coal, lignite, oil} ",List of conventional power plants to include in the sectoral network
diff --git a/doc/configtables/sector.csv b/doc/configtables/sector.csv
index 338cf34e..d8cc3288 100644
--- a/doc/configtables/sector.csv
+++ b/doc/configtables/sector.csv
@@ -66,6 +66,7 @@ boilers,--,"{true, false}",Add option for transforming gas into heat using gas b
 resistive_heaters,--,"{true, false}",Add option for transforming electricity into heat using resistive heaters (independently from gas boilers)
 oil_boilers,--,"{true, false}",Add option for transforming oil into heat using boilers
 biomass_boiler,--,"{true, false}",Add option for transforming biomass into heat using boilers
+overdimension_individual_heating,--,"float",Add option for overdimensioning individual heating systems by a certain factor. This allows them to cover heat demand peaks e.g. 10% higher than those in the data with a setting of 1.1.
 chp,--,"{true, false}",Add option for using Combined Heat and Power (CHP)
 micro_chp,--,"{true, false}",Add option for using Combined Heat and Power (CHP) for decentral areas.
 solar_thermal,--,"{true, false}",Add option for using solar thermal to generate heat.
diff --git a/doc/release_notes.rst b/doc/release_notes.rst
index b1511dd7..fea45d74 100644
--- a/doc/release_notes.rst
+++ b/doc/release_notes.rst
@@ -10,6 +10,19 @@ Release Notes
 Upcoming Release
 ================
 
+* Add new default to overdimension heating in individual buildings. This allows
+  them to cover heat demand peaks e.g. 10% higher than those in the data. The
+  disadvantage of manipulating the costs is that the capacity is then not quite
+  right. This way at least the costs are right.
+
+* Add option to specify to set a default heating lifetime for existing heating
+  (``existing_capacities: default_heating_lifetime:``). 
+
+* Correctly source the existing heating technologies for buildings since the
+  source URL has changed. It represents the year 2012 and is only for
+  buildings, not district heating. So the capacities for urban central are now
+  set to zero from this source.
+
 * Remove long-deprecated function ``attach_extendable_generators`` in :mod:`add_electricity`.
 
 * The filtering of power plants in the ``config.default.yaml`` has been updated regarding phased-out power plants in 2023.