There are two types of supplements that are available for IABSM, the four main theatre specific supplements and the scenario supplements.  Both can still be used with the rules, however some changes will be needed.  Let’s look at two two different types.
1.  The Theatre Specific Supplements.
There are four of these available, Blitzkrieg, Gotterdammerung, Footsteps of the Legions and The Shadow of the Rising Sun.  These contain some sample force guidelines, a guide to using your force covering the numbers of Big Men and the cards to include in the Game Deck as well as AFV and weapon stats for your forces.  We  will be replacing these with new Handbooks over the coming months with the first, Gotterdammerung scheduled for release in January.   These will be much expanded to allow the fielding of a much broader range of force and also to include sample scenarios and articles, so watch this space for the first of them after Christmas.
2.  The Scenario Supplements
We have a significant array of scenario supplements available penned by a number of different authors.  We do hope to be able to uprgade these over a period of time but that is likely to be a lengthy process and, if I am honest, probably one that will never be fully complete.  That said, all of these work with some VERY simple adjustments, as we’re about to find out.
How to Update the Supplements
Converting existing scenarios or the four main supplements to the new version of the rules is a simple process.  The following guidelines should be used.
Big Men
This is probably the main area of change as Big Men have moved from dice to represent their abilities to Levels.  The conversion of these is pretty unscientific, but is based on the principle that Officers and Senior NCOs get a slightly better rating than Junior NCOs as they have more responsibility.  We use the following guidelines.
Officers and Senior NCOs.
By this we mean any officer of Second Lieutenant and above and any Sergeant who is not commanding a section or squad, so Platoon Sergeant, CSM or RSM in British parlance.

Junior NCOs
This refers to NCOs who are leading a section, squad or weapons team.  Normally these will be Corporals or Sergeants.

You may get some variations on themes, such as DAv+1 or D4-2, for any minus adjustment or +1 just count these as their dice type and ignore the plus or minus.  For anything with a +2 then count them as the dice type above, so D4+2 would be considered as a D6.
Armour and Anti-Tank Guns
Due to some subtle changes in the way IABSMv3 treats armour we will be re-evaluating all stats in the forthcoming handbooks.  For now the old handbooks are useable, however some changes are needed.
Weapon Strikes
Increasing all weapon strike factors by 1 is recommended.  So, for example, an anti-tank gun with a strike of 7 will now have a strike of 8.  This applies to anti-tank rifles, but does NOT apply to infantry sections using their inherrent close quarter anti-tank capability.
AFV Morale
There is no scientific way to determine this, but the following should act as a guide

AFVs without a radio net should have their morale set one level lower than normal.
AFV Actions
AFVs will normally have three Actions to use when activated.  It is possible to have some forces with four Actions but these should be limited to very confident veterans.  We have found that giving Panzerjägers four Actions allows them some “shoot and scoot” options, but again this should be limited to high quality crews.
So, that’s it.  Nothing too painful and all should now run smoothly with the new rules.